Malicious PDF — malware analysis report

Static analysis result for SHA-256 8349b15f196554f0…

MALICIOUS

PDF

83.8 KB Created: 2021-02-25 02:26:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 031a5fe3e0ebf458e7940dc304ed0619 SHA-1: b65e07192137cd5200b56008ef44fa4676fcd38d SHA-256: 8349b15f196554f0c2255a28b71b8707a5791ef627f50f24655a05f1ca650136
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to urgency, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/wix?keyword=sportcraft+treadmill+tx335+manual PDF link annotation
    • http://santand-es.com/how_to_clean_airbrushdz75r.pdfIn PDF document text
    • http://djami.ru/nudedokeligiwenolidovahk5ku.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/80130336396.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/kavaluroponakoki.pdfIn PDF document text
    • http://banquepopulaire-fr.org/best_skills_for_blitzer_blood_bowl_2s86vz.pdfIn PDF document text
    • http://vnds-v.website/letter_d_tracing_worksheets_for_kindergarten5kagx.pdfIn PDF document text
    • http://meetchat.space/pavekepetul8gqm2.pdfIn PDF document text
    • http://kulinar2020.site/sezulfkgg8.pdfIn PDF document text
    • http://devgame.design/7985335052208w9f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zurovajij/66903618511.pdfIn PDF document text
    • http://jokosen.atwebpages.com/iso_22000_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/sujusadefipabez.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/80345772144.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/18844439706.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/alight_motion_presets.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/tipos_de_diagnostico_ambiental.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/sap_web_dispatcher_installation_guide_unix.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/how_did_odysseus_defeat_penelopes_suitors.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/how_to_make_natural_black_hair_dye_at_home_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/redubunusenozixituwamibaz.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/18380769209.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/65152906917.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C20 5580 bytes
SHA-256: fc7fa7438412e370fb9f1951f04494e4ca9f573233fd83826c05aa111a28ee93
font_01_sfnt_off00011f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F12 10180 bytes
SHA-256: 92a43140364a3fb2a5196c1b70a8c6d8820015d872a9ff4fff58fba3b110cfd8

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